Transmission-case cap



7 Nov. 12, 1929. H. R. LIETZKE TRANSMISSION CASE CAP Filed Sept. 4, 1928fi lwewrae M'zwsss 14 rramvsrs" latented Nov. 12, 1929 HENRY n. LIETZKE,or sYnAcUsn, NEW YonK, assrenon TO THE wannnn oonrona- TION, orsynacnsn, NEW YOR A conronarron on INDIANA TRANSMISSION-CASE carApplication filed September 4, 1928. Serial No. 303,801.

This invention relates to a new and im' operative position the desireochain of gearv ing in the transmission.

The shifting lever enters the transmissioncase through the top of thelatter and for the purpose of preventing the entrance. into thetransmission case of dirt and foreign matter through the shifting leverbearing a cap is usually provided. This cap is po--- sitioned on theshifting lever and extends downwardly over the upper part of thetransmission case and in spaced relation thereto so that it will at alltimes act as a protective hood for the opening in the transmission case.Hitherto the practice has been to secure this cap in place by a screwextending through the cap into the lever. It has been found difficultand expensive to secure the cap in this manner because of the fact thatthe shifting lever being round and being made of steel it is diiiicultto drill and tap the lever. Furthermore with such a securing means thereis always the possibility that the same may become loosened so that theparts will not be held in the proper relative position.

The main object of my invention is to provide a means whereby the capfor a transmission case may be held securely in position on a shiftinglever but which means will at the same time permit the capoto beassembled with the shifting lever with facility.

Another object is to provide a fastening means of such a charactcrthatthe same can be manufactured quickly and economically 7 Another objectis to provide a means which is so designed that there can be nopossibility of the same becoming loosened.

- Other objects and advantages relate to the ing key used in my device.

of a transmission case .1

aft r to be described.

size, shape and arrangement of parts all as will more fully appear fromthe following description taken in connection with the accompanyingdrawings, in whichi Figure 1 is a side elevation partially broken v awayand partially in section of my cap in position on a shifting lever.

Figure 2 is a side elevation partially broken away of my cap and ashifting lever. v t

Figure 3 is'a perspective view of the lockv In the drawings I show theupper portion having an upwardly extending collar 2 provided with aninternal socket 3.' A shifting lever v '4' having an integral baIl-'-"5is positioned in the transmission case 1 with the ball 5 in registrationwith socket -S.. The cap '6-,- is conical inform with its lower endof agreater-diameter than the '65 diameter of collar 2. Cap 6- carries onits upper end a vertically extending collar 7 having an internaldiameter approximately the same asthe external diameter-of the shiftinglever 4. ing lever .4: a curved slot +8 for the 1 reception of alockingkey Locking key 9.-" has a curved bottom face 10' and atop flat face 1 land isprovided at one end of face 1 1with an upwardly ex; ,75 tendingintegral stop 12. The size and shapeof key 9 is such that whenit is inposition in slot 8.I the face'-11' will be flush with the outer surfaceof the shifting lever l-andthe stop l2 will extend outwardlytherefrom adistance approximatelythe same or slightly greater than the: thicknessof collar 7-;. I also provide. a spiral spring 13' for a purpose hereinWhen it is desired to'assemble-ccap +6 n shifting lever I firs plac i,sition spring -13- with its lower end abutting against the top surfaceof" collar -.2, collar 2-Ybeing provlded jwith a I provide in shift- 701 circular recess ='14 for the reception of spring 13. I then place cap-6- on lever 4 and move the same downwardly '13. 7 1y against the actionof spring --13 locking key -9 until it contacts with stop 12, collar -7-being provided with a slot -15+ into which stop 12 enters. The tensionof spring 18- is such that collar 7 of cap 6- will at all times be heldsecurely against stop 12. Slot 15- in collar 7 is provided to preventany relative rotary movement between cap 6 and shifting lever 4.

I have here shown a means for securing a cap in position on the shiftinglever of a transmission but it will be understood that such a means forsecuring a cap on a lever or other shaft may be employed for differentpurposes and on different types of apparatus without departing from thespirit of my invention, for altho I have shown and describeda specificstructure and form of part as an exemplification of an embodiment of myinvention I do not desire to restrict myself to the exact size, shape orrelation of partsa-s various modifications may be made within the scopeof the appended claims.

WVha't I claim is': 1. In a device of the class described, a

' housing, a lever extending through the housin and provided with aslot, a cap removably mounted on the lever, a removable key positionedin the slot in the lever and formed with a stop, and spring-means forholding the *cap against the stop on the key.

2. Ina device of the class described, a

V housing,a lever extending through the housing and provided with aslot, a cap removably mounted'on the lever and having a collar, aremovable key positioned inthe slot and fo'rmed' with a stop, and'springmeans 7 for holding the collar on'the cap against the stop on the key. 7

3,111 a device of the class described, a

7 housing, a lever extending through the house ing and provided with aslot, a cap removably mounted on the lever, a collar on the capprovidediwitlr a notch, a removable key in the slot-in the lever andformed with a stop,.and spring means for holding the stop onthe key inthe notch in the collar.

- 4; In a device of the class described, a shaft provided with a slot, acap removably mounted onlthe shaft, a removable key positioned in theslot in the shaft and formed. with a sto against the stop on the key.

5. In a device of p, and spring means for holding the cap 7 the classdescribed, a shaft.

cap, and spring means for normally main taining the parts in suchrelative position.

In witness whereof I have hereunto set my hand this 31st day of August.1928.

HENRY R. LIETZKE.

